essex_dave

Hi all, have a prob with me tdr 125..runs fine for 15-20 mins at 65mph then suddenly loses power and will not pickup even changing down through gears....after couple of mins stationery bike revs and seems ok but whe i put in 1st and lift clutch it dies again...leave for another 2 mins and im back on me way....iridium br9es plug seems ok and no overheating.....my local bike repairers seem clueless !...please help! Dave